The Secret of the Old MastersIN this little book I have undertaken to lay before the reader the fruits of the labor of twenty five years. As soon as I could understand and appreciate the splendors of the Grand Masters of painting, I had begun to form a determination to discover the technical principles, methods, and material that enabled the Masters to produce their work. Therefore, the search for the Masters' technic became for me an all absorbing life work to the exclusion of